<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
	</body>
	<script type="text/javascript">
		// CUD 结束
		var arr = ["a","b","c","d","e","f","g"];
		
		
		//R
		var res = arr.forEach(function(item,index,arr){
			arr.push("h")
//			arr.pop()
			console.log(item)
		},{a:"a"})
		
		console.log(arr)
		
	
	</script>
</html>
